Polyurethane spraying device for cold storage construction

Abstract

The invention relates to the field of polyurethane spraying devices, in particular to a polyurethane spraying device for refrigeration house construction, which comprises a spray gun and a handle, a nozzle is mounted at the end of the spray gun; the handle is fixedly arranged on the spray gun; the spray head is communicated with a transmission pipe, the transmission pipe is arranged in the spray gun and the handle, and the transmission pipe is provided with a connector on one side of the handle; a control valve connected with the transmission pipe is arranged on the handle, and the control valve can control the opening degree of the transmission pipe; a driving handle is rotatably arranged on the spray gun corresponding to the control valve, and the driving handle can push and press the control valve through rotation so as to control the opening and closing degree of the transmission pipe; the position-adjustable supporting block is arranged on the spray gun corresponding to the driving handle, the length of the supporting block extending out of the handle can be adjusted by adjusting the position of the supporting block, then the rotating position of the driving handle is limited, and the amplitude of pushing and pressing the control valve by the driving handle is controlled. The downward pressing amplitude of the driving handle is controlled by adjusting the supporting block, and therefore the purpose of accurately controlling the spraying amount is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane spraying devices, in particular to a polyurethane spraying device for cold storage construction. Background Art

[0002] As a polymer material, polyurethane has been widely used in many fields, including building insulation, industrial corrosion protection, automotive interiors, and furniture manufacturing, due to its unique physical and chemical properties. Polyurethane materials have excellent wear resistance, corrosion resistance, high elasticity, and good thermal and sound insulation properties, which can meet the diverse performance requirements of different industries. With the continuous development of modern industry, the application requirements of polyurethane materials are also increasing. Not only do they require excellent basic performance, but also higher standards are placed on the material's molding process and construction precision. During the construction process of polyurethane materials, spraying is a common and efficient construction method. It enables the polyurethane material to quickly and evenly cover the target surface, forming a continuous and dense coating.

[0003] Currently, common polyurethane spraying devices on the market primarily rely on spray guns for spraying. These devices regulate the polyurethane material flow rate by controlling the downward pressure of the spray gun's control valve. Specifically, the operator applies varying degrees of pressure on the control valve with their finger, changing the degree of opening and thereby controlling the material flow rate. However, this reliance on manual force to control the spray flow rate has significant drawbacks. First, this method requires significant operator proficiency and experience, requiring extensive practice to accurately control the relationship between downward pressure and spray flow rate under varying operating conditions. For those new to or using this device, lack of experience can make it difficult to accurately control the downward pressure of the control valve, which can lead to unstable spray flow rates and compromise the quality and uniformity of the polyurethane coating. Stable and precise control of fine force is difficult, impacting project quality. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a polyurethane spraying device for cold storage construction, which is used to solve the problems that the operation mode of the existing spray gun is highly dependent on the operating experience of the staff, it is difficult to accurately control the relationship between the downforce and the spray flow rate, and it is easy to cause the spray flow rate to be unstable, affecting the quality of the project.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides a polyurethane spraying device for cold storage construction, comprising: a spray gun and a handle; a spray head is installed at the end of the spray gun, and the handle is fixedly arranged on the spray gun;

[0007] The spray head is connected to a transmission pipe, which is arranged inside the spray gun and the handle, and the transmission pipe is provided with a connector on one side of the handle;

[0008] The handle is provided with a control valve connected to the transmission tube, and the control valve can control the opening and closing degree of the transmission tube;

[0009] The spray gun is provided with a driving handle rotatably corresponding to the control valve, and the driving handle can push the control valve by rotating to control the opening and closing degree of the transmission pipe;

[0010] The spray gun is provided with a position-adjustable support block corresponding to the driving handle. By adjusting the position of the support block, the length of the support block extending out of the handle can be adjusted, thereby limiting the rotation position of the driving handle and controlling the amplitude of the driving handle pushing the control valve.

[0011] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that a plug-in slot is provided on the handle corresponding to the support block;

[0012] A rotatable screw is provided in the insertion slot;

[0013] The support block is inserted into the insertion slot and is threadedly connected to the lead screw, and the insertion slot can limit the rotation of the support block;

[0014] The support block can be moved along the lead screw by rotating the lead screw, thereby achieving position adjustment of the support block.

[0015] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that a mounting groove is provided on the handle corresponding to the end of the lead screw away from the support block;

[0016] A rotatable screwing block is provided in the mounting groove. The screwing block is fixedly connected to an end of the lead screw away from the support block. The lead screw can be rotated by rotating the screwing block.

[0017] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that a portion of the screw block extends from the notch of the installation slot to form an operating portion.

[0018] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that the inner contour of the plug-in slot is non-circular;

[0019] The outer contour of the support block is also non-circular, and the outer contour of the support block is adapted to the inner contour of the insertion slot.

[0020] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that the spray gun is provided with a connecting block corresponding to the driving handle, and the driving handle and the connecting block are hingedly connected via a connecting shaft.

[0021] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that it also includes a delivery pipe connected to the connector, and the other end of the delivery pipe is connected to the pump body.

[0022] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that it also includes a storage barrel for storing the polyurethane spray material;

[0023] The inlet of the pump body is communicated with the storage barrel, and the outlet of the pump body is communicated with the delivery pipe.

[0024] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that the connecting head and the control valve are arranged on opposite sides of the handle.

[0025] A further improvement of the polyurethane spraying device for cold storage construction of the present invention is that the support block is arranged below the control valve.

[0026] The beneficial effects of the polyurethane spraying device for cold storage construction of the present invention are:

[0027] The polyurethane spraying device for cold storage construction of the present invention has a support block with adjustable position. The position of the support block can be adjusted to limit the rotation angle of the driving handle, thereby controlling the amplitude of the driving handle pushing the control valve. The pushing amplitude of the control valve can limit the opening and closing degree of the transmission pipe, thereby achieving the effect of accurately controlling the spraying flow. When in use, the staff only needs to adjust the position of the support block according to the required spraying flow, and then hold the handle and pull the driving handle until the driving handle contacts the support block, and then move the spray gun to spray the polyurethane. The present invention realizes that the control of the spraying flow no longer depends on the experience of the operator, which greatly improves the accuracy and stability of the flow control.

[0028] The present invention adjusts the position of the support block by arranging a screw block, thereby controlling the spray flow of the spray gun. The operation is more convenient and more practical than the traditional device. Even a novice can easily control the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the polyurethane spraying device for cold storage construction of the present invention;

[0030] Figure 2 This is a side structural schematic diagram of a polyurethane spraying device for cold storage construction according to the present invention;

[0031] Figure 3This is a schematic cross-sectional view of a polyurethane spraying device for cold storage construction according to the present invention;

[0032] Explanation of the reference numerals in the figure: 1. spray gun; 2. spray head; 3. handle; 4. connector; 5. delivery pipe; 6. control valve; 7. drive handle; 8. connecting block; 9. connecting shaft; 10. support block; 11. screw; 12. screw block; 13. mounting groove. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] See Figure 1 The present invention provides a polyurethane spraying device for cold storage construction. Through the arrangement of the lead screw and the support block, the position of the support block can be adjusted by rotating the lead screw, so that the downward pressure amplitude of the lower driving handle can be accurately limited, and then the downward pressure degree of the control valve can be accurately controlled to achieve quantitative adjustment of the spray gun spray flow rate. Compared with the traditional fuzzy control method that relies on human touch, this structure converts flow control into a quantifiable and adjustable mechanical operation, so that the spray flow control no longer depends on the proficiency of the operator, greatly improving the accuracy and stability of the flow control. The foundation pit combined support structure of the present invention is described below with reference to the accompanying drawings.

[0035] See Figure 1 , showing a schematic diagram of the three-dimensional structure of the polyurethane spraying device for cold storage construction of the present invention, the following is combined with Figure 1 , the structure of the polyurethane spraying device for cold storage construction of the present invention is described.

[0036] like Figure 1 As shown, the polyurethane spraying device for cold storage construction of the present invention includes a spray gun 1 and a handle 3. The end of the spray gun 1 is equipped with a nozzle 2, and the handle 3 is fixedly arranged on the spray gun 1; the nozzle 2 is connected to a transmission pipe (not shown in the figure), which is arranged inside the spray gun 1 and the handle 3. The transmission pipe is provided with a connector 4 on one side of the handle 3; combined with Figure 2 and Figure 3 As shown, the handle 3 is provided with a control valve 6 connected to the transmission pipe, and the control valve 6 can control the opening and closing degree of the transmission pipe; the spray gun 1 is rotatably provided with a driving handle 7 corresponding to the control valve 6, and the driving handle 7 can push the control valve 6 by rotating to control the opening and closing degree of the transmission pipe; the spray gun 1 is provided with a position-adjustable support block 10 corresponding to the driving handle 7, and the length of the support block 10 extending out of the handle 3 can be adjusted by adjusting the position of the support block 10, thereby limiting the rotation position of the driving handle 7, and realizing the control of the amplitude of the driving handle 7 pushing the control valve 6.

[0037] In use, the spraying material, i.e. the polyurethane spraying material, is delivered to the connecting head 4 of the transmission pipe, and when the driving handle 7 is not rotated, the control valve 6 is in a closed state, at this time, the control valve 6 closes the transmission pipe, so that the polyurethane spraying material cannot be delivered to the spray head 2 for spraying. Before the driving handle 7 is rotated, the position of the supporting block 10 is adjusted, and the position of the supporting block 10 is adjusted according to the required spraying flow of the polyurethane spraying material, and then the driving handle 7 is pulled by hand, and the driving handle 7 is rotated towards the handle 3 until the driving handle 7 is attached to the supporting block 10, at this time, the driving handle 7 pushes the control valve 6, and the transmission pipe is opened to a certain extent, at this time, the polyurethane spraying material can be delivered to the spray head 2 through the transmission pipe to complete the spraying work. The rotation angle of the driving handle 7 and the depression amplitude of the control valve 6 have a corresponding relationship, and the rotation angle of the driving handle 7 is limited by the supporting block 10, so that the depression amplitude of the control valve 6 is accurately controlled, the opening degree of the transmission pipe is controlled, the spraying flow of the polyurethane spraying material is controlled, and the spraying flow is accurately controlled and the stability of the spraying flow is ensured.

[0038] In one specific embodiment of the present application, as shown in Figure 2 and Figure 3 , the handle 3 is provided with a plug-in slot corresponding to the supporting block 10; the plug-in slot is provided with a rotatable lead screw 11; the supporting block 10 is inserted into the plug-in slot and threadedly connected with the lead screw 11, and the plug-in slot can limit the rotation of the supporting block 10; the supporting block 10 can move along the lead screw 11 by rotating the lead screw 11, so that the position adjustment of the supporting block 11 is realized.

[0039] Further, the inner contour of the plug-in slot is non-circular; the outer contour of the supporting block 10 is also non-circular, and the outer contour of the supporting block 10 is matched with the inner contour of the plug-in slot.

[0040] Preferably, the inner contour of the plug-in slot is square, and the outer contour of the supporting block 10 is also square, so that the supporting block 10 is inserted into the plug-in slot, and the supporting block 10 can move relative to the plug-in slot but cannot rotate.

[0041] Further, the handle 3 is provided with a mounting slot 13 corresponding to the end of the lead screw 11 away from the supporting block 10; the mounting slot 13 is provided with a rotatable screw block 12, and the screw block 12 is fixedly connected with the end of the lead screw 11 away from the supporting block 10, and the lead screw 11 can be rotated by rotating the screw block 12. The screw block 12 is arranged to facilitate the rotation of the lead screw 11.

[0042] The position of the supporting block 10 is adjusted by rotating the lead screw 11, which can accurately limit the pulling amplitude of the driving handle 7, and accurately control the depression degree of the control valve 6, so as to quantitatively adjust the spraying flow of the spray gun.

[0043] Furthermore, a portion of the screwing block 12 extends from the notch of the mounting slot 13 to form an operating portion. A plurality of grooves are provided on the operating portion to increase friction so as to facilitate manual rotation of the screwing block 12.

[0044] Preferably, the screwing block 12 is disc-shaped.

[0045] Combine Figure 3 As shown, the handle 3 can be composed of two parts that are butt-connected. In this way, before the butt-connection, the screw block 12, the screw 11 and the support block 10 can be placed on one part, and then the other part of the handle 3 can be butt-connected to the part, so that the screw block 12, the screw 11 and the support block 10 can be installed on the handle 3.

[0046] In a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the spray gun 1 is provided with a connecting block 8 corresponding to the driving handle 7, and the driving handle 7 and the connecting block 7 are hingedly connected by a connecting shaft 9. In this way, the driving handle 7 can be rotated and adjusted relative to the connecting block 8 by the connecting shaft 9.

[0047] In a specific embodiment of the present invention, the device of the present invention further comprises a delivery pipe 5 connected to the connector 4, and the other end of the delivery pipe 5 is connected to the pump body. The polyurethane spray material for spraying can be delivered into the delivery pipe 5 through the pump body.

[0048] Furthermore, the device of the present invention also includes a storage barrel for storing polyurethane spray paint; the inlet of the pump body is connected to the storage barrel, and the outlet of the pump body is connected to the delivery pipe. The pump body can deliver the polyurethane spray paint in the storage barrel to the delivery pipe 5.

[0049] In a specific embodiment of the present invention, the connector 4 and the control valve 6 are disposed on opposite sides of the handle 3. Furthermore, the support block 10 is disposed below the control valve 6.

[0050] like Figure 3 As shown, the control valve 6 is provided with a push button, which protrudes from one side of the handle 3, preferably from the side of the handle 3 close to the spray head 2. The end of the support block 10 can extend from the side of the handle 3 close to the spray head 2. The length of the portion of the support block 10 extending from the handle 3 is adjustable, specifically by adjusting the lateral position of the support block 10. The end of the support block 10 can be adjusted to be closer to the spray head 2 relative to the end of the button. In this way, when the driving handle 7 is pulled, the driving handle 7 can contact the end of the support block 10 and cannot touch the button of the control valve 6, realizing a locking function to prevent the driving handle 7 from being accidentally touched. When spraying is required, the support block 10 can be adjusted to a corresponding position to limit the amplitude of the driving handle 7 pushing the control valve 6, thereby achieving quantitative adjustment of the spray flow rate.

[0051] After adjusting the position of the support block 10, the staff can hold the handle 3 and pull the drive handle 7 until it contacts the support block 10, and then push the control valve 6 to the corresponding amplitude to control the polyurethane spray material to be transported to the nozzle 2 through the transmission pipe, and then move the spray gun 1 slowly or at a constant speed to achieve uniform spraying of the work surface, or in order to accurately control the spraying thickness, the handle 3 of the spray gun 1 can be fixed on a structure that can move at a constant speed (such as a manipulator), and the support block 10 limits the spraying flow rate, and then the manipulator can control the spray gun to move at a constant speed, thereby achieving a uniform thickness of the spray layer.

[0052] The device of the present invention significantly improves the applicability and convenience of spraying operations. For ultra-thin coatings with stringent requirements for spraying thickness, precise adjustment of the support block position and strict control of the downward pressure of the drive handle ensure consistent flow rate each time the spray is applied. This effectively avoids uneven coating thickness caused by manual operation force deviations and significantly improves spraying quality.

[0053] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A polyurethane spraying device for cold storage construction, comprising: A spray gun and a handle; wherein a spray head is mounted on the end of the spray gun, and the handle is fixedly mounted on the spray gun; The spray head is connected to a transmission pipe, which is arranged inside the spray gun and the handle, and the transmission pipe is provided with a connector on one side of the handle; The handle is provided with a control valve connected to the transmission tube, and the control valve can control the opening and closing degree of the transmission tube; A driving handle is rotatably provided on the spray gun corresponding to the control valve, and the driving handle can push the control valve by rotating to control the opening and closing degree of the transmission pipe; The spray gun is provided with a position-adjustable support block corresponding to the driving handle. By adjusting the position of the support block, the length of the support block extending out of the handle can be adjusted, thereby limiting the rotation position of the driving handle and controlling the amplitude of the driving handle pushing the control valve.

2. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The handle is provided with a plug-in slot corresponding to the support block; A rotatable screw is provided in the insertion slot; The support block is inserted into the insertion slot and is threadedly connected to the lead screw, and the insertion slot can limit the rotation of the support block; The support block can be moved along the lead screw by rotating the lead screw, thereby achieving position adjustment of the support block.

3. The polyurethane spraying device for cold storage construction according to claim 2, characterized in that: A mounting groove is provided on the handle corresponding to the end of the lead screw away from the support block; A rotatable screwing block is provided in the mounting groove. The screwing block is fixedly connected to an end of the lead screw away from the support block. The lead screw can be rotated by rotating the screwing block.

4. The polyurethane spraying device for cold storage construction according to claim 3, characterized in that: A portion of the screwing block extends from the notch of the installation slot to form an operating portion.

5. The polyurethane spraying device for cold storage construction according to claim 2, characterized in that: The inner contour of the plug-in slot is non-circular; The outer contour of the support block is also non-circular, and the outer contour of the support block is adapted to the inner contour of the insertion slot.

6. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The spray gun is provided with a connecting block corresponding to the driving handle, and the driving handle and the connecting block are hingedly connected via a connecting shaft.

7. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: It also includes a delivery pipe connected to the connector, and the other end of the delivery pipe is connected to the pump body.

8. The polyurethane spraying device for cold storage construction according to claim 7, characterized in that: Also included is a storage drum containing polyurethane spray material; The inlet of the pump body is communicated with the storage barrel, and the outlet of the pump body is communicated with the delivery pipe.

9. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The connecting head and the control valve are arranged on opposite sides of the handle.

10. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The support block is arranged below the control valve.

Images